Car-roof.



D. W. EAWKSWORTH.

GAE ROOF.

APPLICATION FILED JUNE 16, 1911.

Patented Mar. 10, 1.914

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DAVID W. HAWKSWORTI-I, 0F DETROIT, MICHIGAN, ASSIGNOR TO HUTCHINS GARROOFING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

CAR-ROOF.

Specification of Letters Patent.

Application filed .Tune 16, 1911.

Patented Mar. to, 1914..

Serial No. 633,572.

To all whom it may concern Be it known that T, DAVID W. HAWKS- WORTH, acitizen of the United States of America, residing at Detroit, in thecounty of Wayne and. State of Michigan, have invented certain new anduseful Improvements in Car-Roofs, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention relates to car roofs of the type comprising a skeletonframework of carlines, and purlins, and roofing sheets or platesarranged between the carlines weatherproofed by caps embracing thecarlines, and upstanding flanges at the edge of the sheets.

The invention consists in the peculiar construction of the carlines andmeans of attaching the same to the purlins, and further in variousfeatures of construction as hereinafter set forth.

In the drawings-Figure 1 is a sectional perspective view of a portion ofthe roof frame; Fig. 2 is a section through the carline, at the point ofintersection with the purlin showing the roofing sheets andweather-proofing caps in position; Fig. 3 is a view similar to F ig. 1showing a modified construction.

One of the advantages of the type of roof construction above referred tois the comparatively slight depth or thickness of the roof structurewhich results in increasing the capacity of the car by permitting agreater internal height.

It is the object of the present invention to still further decrease thevertical dimension of this roof structure by a novel carlineconstruction and means of attaching the same to the purlins.

In detail, A is the carline and B a purlin of the roof frame.

C are the roofing sheets which are provided with the upstanding edgeflanges D, and E is the weatherproofing cap embracing the carlines andedge flanges and having lateral flanges F resting upon the root sheets.

The carlines A are formed as shown, of-an inverted U-section havinglaterally and outwardly extending flanges A at the base. The purlinsupon which the roof sheets C directly rest are supported from thecarlines through the medium of hanger bolts Gr, preferably passingthrough the central point of crossing of the carlines and purlins.

To secure the bolts Gto the carline they are provided with heads or nutswhich must be arranged above the bearing portion of the beam and beneaththe caps E. Thus if the heads or nuts were to be arranged above theplane of the web portion of the beam this would necessitate anadditional height of the cap equal to the thickness of said head or nut.l have however, avoided the necessity of such a construction by formingdepressed bearings in the carline permitting the nuts or heads to lieflush with the upper face of the web.

As shown in Fig. 1, the carlines A are rolled with a longitudinallyextendin central groove or depression H of su cient width to receive thehead or nut of the bolt,

and of a depth equal to the thickness thereof. In Fig. 3 a modifiedconstruction is shown where the metal of the web is struck down at l toform a depressed bearing or socket for receiving the head or nut. Witheach construction, neither the bolt nor the head or nut will projectabove the web of the bearing and consequently the cap E may be decreasedin height so as to just clear the beam.

What I claim as my invention is:

1. In a car roof, the combination with carlines, of invertedtil-section, purlins and roofing sheets or plates supported thereonbetween the carlines, of'weather roofing caps embracing said carlinesand t e edge portions of said sheets, headed connecting members betweensaid carlines and purlins, and a depressed bearing in the web portion ofsaid carline for receiving the head of said connecting member andpermitting said cap to lie flush with the top of the carline.

2. In a car roof a skeleton frame formed of crossing beams, one of saidbeams having a web portion, a laterally extending flange portion and adepressed bearing in the web portion positioned intermediate the planesof said web and flange ortions, for receiving one end of a connectingmember for said beams.

3. In a car roof, the combination with a carline, of a cap lyingadjacent to a portion of said carline, a headed hanger su ported fromsaid carline, and a depressed hearing in the portion adjacent to saidcap for reing the head of said hanger and preventing oeiving the headofsaid hanger. rotation thereof. 10

4. In a car roof, the comkiiiation with a In testimony whereof I afiixmy signature car-line, of a cap lying-adjacent to a portion in presenceof two witnesses.

of said carline a hanger provided with 21 DAVID W. HAWKSWORTH.non-circular head supported from said car- Witnesses: line, and adepressed bearing in sa1d portion JAMES P. BARRY,

of the car-line adjacent to said cap for, receiv- W. J. BELKNAP.

